sh6612a SinoWealth Micro-Electronics Corp. Ltd, sh6612a Datasheet - Page 7
![no-image](/images/no-image-200.jpg)
sh6612a
Manufacturer Part Number
sh6612a
Description
2k 4-bit Microcontroller With Lcd Driver
Manufacturer
SinoWealth Micro-Electronics Corp. Ltd
Datasheet
1.SH6612A.pdf
(24 pages)
- Current page: 7 of 24
- Download datasheet (808Kb)
6. I/O Port
SH6612A has 16 CMOS quasi-I/O ports, PORTA, PORTB, PORTC, PORTD. All I/O ports are bit programmable.
If PORTA,B,C,D are pull-high internally, it is weak drive.
The equivalent circuit is below:
Port I/O Data Register: (PDR)
Address
$0A
$0B
$08
$09
PORT A.3
PORT B.3
PORT C.3
PORT D.3
Bit3
Data-Out
Data-In
PORT C.2
PORT D.2
PORT A.2
PORT B.2
Bit2
7/24
I/O PAD
PORT C.1
PORT D.1
PORT A.1
PORT B.1
Bit1
PORT C.0
PORT D.0
PORT A.0
PORT B.0
SH6612A
Bit0
Ver 0.3
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